(8.D.2.2 ) BandToBin
Overview
Expand frequency domain bands into individual bins
Discussion
The Band to Bin Module is a module that expands frequency bands into more bins. It expands each input band into multiple bins as per the user defined bandSize array and this module only accepts real numbers as inputs. If the total number of bins in .bandSize is smaller than the .numBins variable, the module will output zeros for the missing bins. If the total number of bins in .bandSize is greater than the .numBins variable, the module will ignore the value of any band that is larger than the last bin.
The module supports multichannel inputs and separately expands the bins for each channel. That is, if the input has N channels then the output will also have N channels.
Type Definition
typedef struct _ModuleBandToBin
{
ModuleInstanceDescriptor instance; // Common Audio Weaver module instance structure
INT32* bandSize; // Number of output bins to expand per input band.
INT32* startIndex; // Starting bin index for each band.
INT32* endIndex; // Ending bin index for each band.
} ModuleBandToBinClass;
Variables
Properties
Name | Type | Usage | isHidden | Default value | Range | Units |
bandSize | int* | parameter | 0 | [32 x 1] | Unrestricted | Â |
startIndex | int* | derived | 1 | [32 x 1] | Unrestricted | Â |
endIndex | int* | derived | 1 | [32 x 1] | Unrestricted | Â |
Pins
Input Pins
Name: in
Description: audio input
Data type: float
Channel range: Unrestricted
Block size range: Unrestricted
Sample rate range: Unrestricted
Complex support: Real
Output Pins
Name: out
Description: audio output
Data type: float
MATLAB Usage
File Name: band_to_bin_module.m
M = band_to_bin_module(NAME, NUMBINS)
Creates a module which expands frequency bands to individual frequency
bins. Arguments:
NAME - name of the module.
NUMBINS - number of output bins
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